© JUL 2019 | IRE Journals | Volume 3 Issue 1 | ISSN: 2456-8880
Design and Construction of Horizontal Axis Wind Pump THAN NAING WIN1, KYAW AUNG2, AUNG KO WIN3, CHO CHO KHAING4 1, 3, 4 Department of Mechanical Engineering, Technological University, Magway, Myanmar 2 Department of Mechanical Engineering, Technological University, Mandalay, Myanmar
Abstract- The purpose of this paper is to provide water supply from wind energy for local area. Wind energy is one the lowest-priced renewable energy technologies available today. The horizontal axis wind pump is designed to derive 48W pump. The blades of wind pump are designed by using the NACA 64-215 series. The multi-blade wind pump can produce 51W. 48W pump can be used with low speed. Blade is divided into 8 elements with equal length forming 9 sections throughout the blade. The blade length is obtained 0.701 m and rotor swept area is 2.5847 m2. Diameter of rotor is 1.8288 m. The rotor speed is 157 rpm. Therefore, the transmission system is used to get less revolution from output shaft of the wind pump. The speeddown spur gear (315 mm diameter, 5 mm module, face width 0.785 mm and 63 teeth) are used. The design of pinion is 140 mm diameter, 5 mm module, face width 0.785 mm and 30 teeth. Material of spur gear and pinion are selected with cast steel.For utilization of house-hold wind generation, the calculation of rotor swept area and selection for height of tower is the most important factor. The technical data, capacity and testing results of the designed wind pump are also presented. Indexed Terms- Wind Energy, Pump, Multi-Blade, Gear, Blade I.
INTRODUCTION OF WINDMILL
Windmills are classified as ‘horizontal-axis’ and ‘vertical-axis’ depending upon the orientation of the axis of rotation of their rotors. A wind mill operates by slowing down the wind and extracting a part of it’s energy in the process. For a horizontal axis, the rotor axis is kept horizontal and aligned parallel in the direction of the wind stream. In a vertical-axis turbine, the rotor axis is vertical and fixed, and remains perpendicular to the wind stream. Windmills have blades fixed to a central shaft. The extracted
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energy causes the shaft to rotate. This rotating shaft is used to drive a pump, to grind seeds or to generate electric power. Two important aerodynamic principles are used in windmill operations, i.e. lift and drag. Wind can rotate of a wind mill either by lifting (lift) the blades or by simply passing against the blades (drag). Slow-speed mills are mainly driven by the drag forces acting on the rotor. The torque at the rotor shaft is comparatively high which is of prime importance for mechanical applications such as water pumps. For slower mills, a greater blade area is required, so the fabrication of blades is undertaken using curved plates. High speed mills utilize lift forces to move the blades, which phenomenon is similar to what acts on the wings of an aero plane. Faster mills require aero foil-type blades to minimize the adverse effect of the drag forces. The blades are fabricated from aerofoil sections with a high thickness-to-chord ratio in order to produce a high lift relative to drag. II.
HORIZONTAL AXIS WINDMILL MACHINE
Horizontal axis wind turbines resemble an airplane propeller with either two or three blades. Horizontal axis wind generator may be drag systems. The axis rotation is horizontal and the rotor plane is vertical facing the wind. The shaft is mounted on two bearing. Blades on rotor is usually designed to be oriented in front (upwind) or behind (downwind) of the tower. Upwind machines need a tail or some other mechanism to maintain orientation. Downwind machines produce wind shadow and turbulence in the blade path. This may be quite seriously affected by the tower.
ICONIC RESEARCH AND ENGINEERING JOURNALS
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